JP2007162843A - Gas dynamic pressure bearing, and motor such as polygon scanner motor provided with gas dynamic pressure bearing - Google Patents

Gas dynamic pressure bearing, and motor such as polygon scanner motor provided with gas dynamic pressure bearing Download PDF

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JP2007162843A
JP2007162843A JP2005360540A JP2005360540A JP2007162843A JP 2007162843 A JP2007162843 A JP 2007162843A JP 2005360540 A JP2005360540 A JP 2005360540A JP 2005360540 A JP2005360540 A JP 2005360540A JP 2007162843 A JP2007162843 A JP 2007162843A
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bearing
dynamic pressure
gas dynamic
motor
pressure bearing
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JP4686353B2 (en
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Toshiya Uchida
俊哉 内田
Tadashi Okabe
正 岡部
Akiyoshi Takahashi
明義 高橋
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Nidec Copal Electronics Corp
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Nidec Copal Electronics Corp
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  • Sliding-Contact Bearings (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas dynamic pressure bearing, and a motor such as a polygon scanner motor provided with the gas dynamic pressure bearing capable of rotating smoothly by efficiently inhibiting generation of sliding powder even in repetitive turning stopping actions. <P>SOLUTION: The gas dynamic pressure bearing supports rotation by generating a dynamic pressure by relative rotation of a shaft member, and a bearing member fitting on the shaft member via a gas dynamic pressure space. The gas dynamic pressure bearing is composed by coating and molding a whole or at least a bearing surface of either one of the shaft member or the bearing member with a resin material mixed with a sliding performance improving subsidiary material, removing a skin layer of a portion to be the bearing surface, and exposing a surface of the sliding performance improving subsidiary material. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は高速回転で耐久性に優れた低騒音の情報機器、画像機器、計測機器に用いられる気体動圧軸受けおよび気体動圧軸受けを備えるカラーホイール用モータ、ファンモータ、ポリゴンスキャナモータ等のモータに関する。   The present invention relates to a gas dynamic pressure bearing used for information equipment, imaging equipment, and measuring equipment having high durability at high speed and durability, and a motor for color wheel having a gas dynamic pressure bearing, a fan motor, a polygon scanner motor, etc. About.

従来、この種の気体動圧軸受けは経済性に優れ、かつ無潤滑状態においても要求される機能寿命を満足させるために、軸およびスリーブのうちの少なくとも一方が無機充填材および繊維状補強材を含有する樹脂組成物で成型されたものが使用されている。   Conventionally, this type of gas dynamic pressure bearing is excellent in economic efficiency, and in order to satisfy a functional life required even in a non-lubricated state, at least one of the shaft and the sleeve is made of an inorganic filler and a fibrous reinforcing material. What was shape | molded with the resin composition to contain is used.

しかしながら、このような樹脂組成物で成型されたものは、表面が樹脂材だけのスキン層が形成されるため、繰り返しの回転停止動作において、初期的に摺動粉が発生し、やがては摺動部に詰まり、軸受けの損傷や回転不能等の不具合が生じるという欠点があった。
特開平９−３２８５１ However, those molded with such a resin composition form a skin layer whose surface is only a resin material, so that sliding powder is generated at the initial stage in repeated rotation stopping operations, and eventually sliding occurs. There is a disadvantage that the portion is clogged, causing problems such as damage to the bearing and inability to rotate.
JP-A-9-32851

本発明は以上のような従来の欠点に鑑み、繰り返しの回転停止動作においても摺動粉が発生するのを効率よく阻止して、スムーズに回転させることができる気体動圧軸受けおよび気体動圧軸受けを備えるポリゴンスキャナモータ等のモータを提供することを目的としている。   In view of the above-described conventional drawbacks, the present invention is a gas dynamic pressure bearing and a gas dynamic pressure bearing that can efficiently prevent sliding powder from being generated even in repeated rotation stopping operations and can be smoothly rotated. It aims at providing motors, such as a polygon scanner motor provided with.

本発明の前記ならびにそのほかの目的と新規な特徴は次の説明を添付図面と照らし合わせて読むと、より完全に明らかになるであろう。
ただし、図面はもっぱら解説のためのものであって、本発明の技術的範囲を限定するものではない。 The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.

上記目的を達成するために、本発明は軸部材およびこの軸部材に気体動圧空間を介して嵌合する軸受け部材の相対的な回転により動圧を発生し、回転を支承する気体動圧軸受けにおいて、前記軸部材と軸受け部材のいずれか一方の全体あるいは少なくとも軸受面を摺動性改善補助材を混錬させた樹脂材で被膜成型し、の軸受面になる部分のスキン層を除去して摺動性改善補助材を表面に露出させて気体動圧軸受けを構成している。 In order to achieve the above object, the present invention provides a gas dynamic pressure bearing that generates dynamic pressure by relative rotation of a shaft member and a bearing member fitted to the shaft member via a gas dynamic pressure space, and supports the rotation. In this method, the whole or at least the bearing surface of either the shaft member or the bearing member is coated with a resin material kneaded with a slidability improving auxiliary material, and the skin layer of the portion that becomes the bearing surface is removed. The gas dynamic pressure bearing is configured by exposing the slidability improving auxiliary material to the surface.

本発明は気体動圧軸受けを備えるポリゴンスキャナモータ等のモータにおいて、該ポリゴンスキャナモータ等のモータの気体動圧軸受けの軸部材あるいは軸受けのいずれか一方の全体あるいは少なくとも軸受面を、摺動性改善補助材を混錬させた樹脂材で被膜成型し、この軸受面になる部分のスキン層を除去して摺動性改善補助材を表面に露出させたものを用いてポリゴンスキャナモータ等のモータを構成している。   The present invention relates to a motor such as a polygon scanner motor provided with a gas dynamic pressure bearing, and improves the slidability of the whole or at least the bearing surface of either the shaft member or the bearing of the gas dynamic pressure bearing of the motor such as the polygon scanner motor. Form a film with a resin material kneaded with auxiliary materials, remove the skin layer on the bearing surface, and expose the sliding improvement auxiliary material on the surface, using a motor such as a polygon scanner motor. It is composed.

以上の説明から明らかなように、本発明にあっては次に列挙する効果が得られる。   As is clear from the above description, the present invention has the following effects.

（１）軸部材およびこの軸部材に気体動圧空間を介して嵌合する軸受け部材の相対的な回転により動圧を発生し、回転を支承する気体動圧軸受けにおいて、前記軸部材と軸受け部材のいずれか一方の全体あるいは少なくとも軸受面を摺動性改善補助材を混錬させた樹脂材で成型し、の軸受面になる部分のスキン層を除去して摺動性改善補助材を表面に露出させて気体動圧軸受けを構成しているので、繰り返しの回転停止動作においても、摺動粉になりやすいスキン層が除去されているため、摺動粉の発生を効率よく阻止することができる。
したがって、軸受けを損傷させたり、回転不能等の不具合を効率よく防止することができる。 (1) In a gas dynamic pressure bearing which generates dynamic pressure by relative rotation of a shaft member and a bearing member fitted to the shaft member via a gas dynamic pressure space, and supports the rotation, the shaft member and the bearing member Either the entire bearing surface or at least the bearing surface is molded from a resin material kneaded with a sliding property improving auxiliary material, and the skin layer of the portion that becomes the bearing surface is removed to provide the sliding property improving auxiliary material on the surface. Since the gas dynamic pressure bearing is exposed, the skin layer that easily becomes a sliding powder is removed even in repeated rotation stopping operations, and thus the generation of sliding powder can be efficiently prevented. .
Therefore, it is possible to efficiently prevent problems such as damage to the bearing and inability to rotate.

（２）前記（１）によって、の軸受面になる部位のスキン層を除去しているため、回転停止時には摺動性改善補助材が表面に露出した部位との接触となり、損傷なくスムーズに回転させることができる。 (2) Since the skin layer of the part that becomes the bearing surface is removed by (1) above, when the rotation is stopped, the slidability improving auxiliary material comes into contact with the part exposed on the surface and rotates smoothly without damage. Can be made.

（３）前記（１）によって、スキン層を除去する加工でよいので、容易に実施することができる。 (3) According to the above (1), since the process of removing the skin layer may be performed, it can be easily performed.

（４）請求項２、３、４、５も前記（１）〜（３）と同様な効果が得られる。 (4) Claims 2, 3, 4, and 5 can provide the same effects as the above (1) to (3).

以下、図面に示す本発明を実施するための最良の形態により、本発明を詳細に説明する。   Hereinafter, the present invention will be described in detail with reference to the best mode for carrying out the invention shown in the drawings.

図１ないし図４に示す本発明を実施するための最良の第１の形態において、１は本発明の気体動圧軸受けを備えるカラーホイール用モータ、ファンモータ、ポリゴンスキャナモータ等のモータ、本実施の形態では、ポリゴンスキャナモータで、このポリゴンスキャナモータ１は基板２に軸固定部材３を介して固定された軸部材４と、この軸部材４の外周部に気体動圧空間５を介して回転可能に嵌合するほぼ中央部より外方へ突出する支持片６を有するＳＵＳ系金属、焼結金属、青銅系焼結金属、黄銅系金属、アルミ材などで形成された軸受け部材７と、この軸受け部材７の支持片６より下部位置の外周部に固定されたバックヨーク８と、このバックヨーク８の外周部に位置するように、前記基板２に取付けられたコイル９と、前記軸受け部材７の支持片６の上部に円環状の部材１０を介して取付けられた、該円環状の部材１０と同系の材質を用いた多面鏡１１と、この多面鏡１１を押し圧固定する前記軸受け部材７の上部外周部に嵌合された多面鏡押え１２と、前記円環状の部材１０の先端下部より下方へ突出するように取付けられたロータケース１３と、このロータケース１３の前記コイル９と対向する内壁面に取付けられた永久磁石１４とで構成され、前記軸部材４は図３および図４に示すようにポリアミド、ポリアセタール、ポリカーボネート、変性ポリフェニレンエーテル、ポリブチレンテレフタレート、ポリエチレンテレフタレート、超高分子ポリエチレン、好ましくは更に耐熱が高いポリサルホン、ポリエーテルサルホン、ポリフェニレンサルファイド、ポリアリレート、ポリアミドイミド、ポリエーテルイミド、ポリエーテルエーテルケトン、ポリイミド、液晶ポリマー、フッ素樹脂、エポキシ等のベース樹脂に使用目的に応じた比率が選択される摺動性改善補助材としてグラファイト、二硫化モリブデン、二硫化タングステン、フッ素、PＴＦＥ、窒化ホウ素、フッ化黒鉛等の潤滑材および錫、銀、銅、ニッケル等の金属あるいはこれらの合金を低融点金属（熱伝導性能向上）、必要に応じてカーボンファイバー、チタン酸カリウム繊維等の補強材を混錬させた樹脂材でＳＵＳ系金属、焼結金属、青銅系焼結金属、黄銅系金属、アルミ材などで形成された軸部材本体４ａの外周部に軸部本体１５を被膜成型し、この摺動軸受面１６になる部位のスキン層１７を切削や研磨等で除去して、摺動性改善補助材が表面に露出させたものである。
なお、前記軸部材４に気体動圧溝を形成する場合にはスキン層１７を除去して残る軸部本体１５の膜厚は４０ミクロン前後になるようにする。また、軸受け部材７の内壁面に気体動圧溝を形成する場合にはスキン層１７を除去して残る軸部本体１５の膜厚は１０ミクロン程度でよい。
また、軸部材本体４ａと軸部本体１５とを軸部本体１５の材質を用いて一体形成したものを用いても良い。 In the best mode for carrying out the present invention shown in FIGS. 1 to 4, reference numeral 1 denotes a motor such as a motor for a color wheel, a fan motor, or a polygon scanner motor provided with the gas dynamic pressure bearing of the present invention. In this embodiment, the polygon scanner motor 1 includes a shaft member 4 fixed to the substrate 2 via a shaft fixing member 3 and a gas dynamic pressure space 5 around the outer periphery of the shaft member 4. A bearing member 7 formed of SUS metal, sintered metal, bronze sintered metal, brass metal, aluminum material or the like having a support piece 6 protruding outward from a substantially central portion that can be fitted. A back yoke 8 fixed to the outer peripheral portion of the bearing member 7 below the support piece 6, a coil 9 attached to the substrate 2 so as to be positioned on the outer peripheral portion of the back yoke 8, and the bearing member A polygonal mirror 11 made of a material similar to the annular member 10 and attached to the upper part of the support piece 6 via the annular member 10, and the bearing member 7 for pressing and fixing the polygonal mirror 11. A multifaceted mirror presser 12 fitted to the upper outer peripheral portion of the upper member, a rotor case 13 attached so as to protrude downward from the lower end of the annular member 10, and the coil 9 of the rotor case 13. The shaft member 4 is composed of polyamide, polyacetal, polycarbonate, modified polyphenylene ether, polybutylene terephthalate, polyethylene terephthalate, ultrahigh molecular weight polyethylene, as shown in FIGS. 3 and 4. Preferably polysulfone, polyethersulfone, polyphenylene sulfide, polyrelay, which have higher heat resistance As a slidability improving auxiliary material, the ratio according to the purpose of use is selected for the base resin such as polyamide imide, polyether imide, polyether ether ketone, polyimide, liquid crystal polymer, fluorine resin, epoxy, etc., graphite, molybdenum disulfide, Lubricants such as tungsten disulfide, fluorine, PTFE, boron nitride, fluorinated graphite, and metals such as tin, silver, copper, nickel, or alloys thereof are low melting point metals (improves thermal conductivity), and carbon fiber as required In the outer peripheral portion of the shaft member main body 4a formed of SUS metal, sintered metal, bronze sintered metal, brass metal, aluminum material, etc. with a resin material kneaded with a reinforcing material such as potassium titanate fiber The shaft body 15 is formed into a film, and the skin layer 17 at the portion that becomes the sliding bearing surface 16 is removed by cutting, polishing, or the like. It is intended to expose the surface.
When the gas dynamic pressure groove is formed in the shaft member 4, the film thickness of the shaft body 15 remaining after removing the skin layer 17 is set to about 40 microns. Further, when the gas dynamic pressure groove is formed on the inner wall surface of the bearing member 7, the film thickness of the shaft body 15 remaining after the skin layer 17 is removed may be about 10 microns.
Alternatively, the shaft member body 4a and the shaft body 15 may be integrally formed using the material of the shaft body 15.

上記構成の気体動圧軸受けを備えるポリゴンスキャナモータ１は、軸部材４のの軸受面１６のスキン層１７が除去されているため、繰り返しの回転停止動作においても、軸部材４の摺動性改善補助材が露出したの軸受面１６と軸受け部材７とが接触するため、摺動粉が発生するスキン層が除去されているため、軸受けを損傷させたり、回転不能等の不具合を効率よく防止できる。
[発明を実施するための異なる形態] Since the skin layer 17 of the bearing surface 16 of the shaft member 4 is removed from the polygon scanner motor 1 having the gas dynamic pressure bearing configured as described above, the slidability of the shaft member 4 can be improved even in repeated rotation stopping operations. Since the bearing surface 16 where the auxiliary material is exposed and the bearing member 7 are in contact with each other, the skin layer from which sliding powder is generated is removed, so that it is possible to efficiently prevent problems such as damage to the bearing and inability to rotate. .
[Different forms for carrying out the invention]

次に、図５ないし図１７に示す本発明を実施するための異なる形態につき説明する。なお、これらの本発明を実施するための異なる形態の説明に当って、前記本発明を実施するための最良の第１の形態と同一構成部分には同一符号を付して重複する説明を省略する。   Next, different modes for carrying out the present invention shown in FIGS. 5 to 17 will be described. In the description of these different modes for carrying out the present invention, the same components as those in the best mode for carrying out the present invention are designated by the same reference numerals and redundant description is omitted. To do.

図５ないし図８に示す本発明を実施するための第２の形態において、前記本発明を実施するための最良の第１の形態と主に異なる点は、ＳＵＳ系金属、焼結金属、青銅系焼結金属、黄銅系金属、アルミ材などで形成された軸部材４Ｂと、前記最良の第１の形態の軸部材と同様に軸受け本体７ａの軸受面となる内壁面に被膜成形された軸受け部材本体１８の軸受面１９のスキン層２０を除去した軸受け部材７Ａと、この軸受け部材７Ａに円環状の部材１０Ａを一体形成した点で、このように形成した軸受け部材７Ａを用いて構成した気体動圧軸受けを備えるポリゴンスキャナモータ１Ａにしても、前記本発明を実施するための最良の第１の形態と同様な作用効果が得られる。
なお、ミラーがアルミ材であるため、軸受け部材７Ａの軸受け本体７ａもアルミ材を使用するのが好ましい。この場合、アルミ材にはアルマイト処理を行う。
また、軸受け本体７ａと軸受け部材本体１８とを軸受け部材本体１８の材質を用いて一体形成したものを用いても良い。 The second embodiment for carrying out the present invention shown in FIGS. 5 to 8 is mainly different from the best first embodiment for carrying out the present invention in that SUS metal, sintered metal, bronze. A shaft member 4B formed of a sintered metal, a brass-based metal, an aluminum material, or the like, and a bearing formed by coating on an inner wall surface serving as a bearing surface of the bearing body 7a in the same manner as the shaft member of the first preferred embodiment. A bearing member 7A from which the skin layer 20 of the bearing surface 19 of the member body 18 is removed, and an annular member 10A formed integrally with the bearing member 7A, and a gas constituted by using the bearing member 7A thus formed. Even with the polygon scanner motor 1A provided with the dynamic pressure bearing, the same effects as those of the best first embodiment for carrying out the present invention can be obtained.
Since the mirror is made of an aluminum material, the bearing body 7a of the bearing member 7A is also preferably made of an aluminum material. In this case, the aluminum material is anodized.
Alternatively, a bearing body 7a and a bearing member body 18 that are integrally formed using the material of the bearing member body 18 may be used.

図９ないし図１１に示す本発明を実施するための第３の形態において、前記本発明を実施するための最良の第１の形態と主に異なる点は、軸受け部材７Ｂ
を基板２に固定し、スキン層１７が除去された軸部材４Ａの上部外周部にハブ２１を固定し、該ハブ２１に多面鏡１１、バックヨーク８、永久磁石１４を取付けたロータケース１３を取付けた点で、このように構成した気体動圧軸受けを備えるポリゴンスキャナモータ１Ｂにしても、前記本発明を実施するための最良の第１の形態と同様な作用効果が得られる。 The third embodiment for carrying out the present invention shown in FIGS. 9 to 11 is mainly different from the best first embodiment for carrying out the present invention in that a bearing member 7B.
Is fixed to the substrate 2, the hub 21 is fixed to the upper outer peripheral portion of the shaft member 4 </ b> A from which the skin layer 17 has been removed, and the rotor case 13 having the polygon mirror 11, the back yoke 8, and the permanent magnet 14 attached to the hub 21. In the point of attachment, even the polygon scanner motor 1B having the gas dynamic pressure bearing configured as described above can obtain the same effects as those of the best first embodiment for carrying out the present invention.

図１２ないし図１４に示す本発明を実施するための第４の形態において、前記本発明を実施するための第３の形態と主に異なる点は、軸受け部材本体１８Ａの摺動面１９のスキン層２０を除去した軸受け部材７Ｃを用いた点で、このように形成した気体動圧軸受けを備えるポリゴンスキャナモータ１Ｃにしても、前記本発明を実施するための第３の形態と同様な作用効果が得られる。   The fourth embodiment for carrying out the present invention shown in FIGS. 12 to 14 is mainly different from the third embodiment for carrying out the present invention in that the skin of the sliding surface 19 of the bearing member main body 18A. In the point that the bearing member 7C from which the layer 20 is removed is used, even the polygon scanner motor 1C having the gas dynamic pressure bearing formed in this way has the same function and effect as the third embodiment for carrying out the present invention. Is obtained.

図１５ないし図１７に示す本発明を実施するための第５の形態において、前記本発明を実施するための第２の形態と主に異なる点は、非磁性のＳＵＳ303、304
を用いた軸部材４Ｃと、青銅系焼結金属で形成された軸受け本体７ａを用いた軸受け部材７Ｄを用いた点で、このように形成した気体動圧軸受けを備えるポリゴンスキャナモータ１Ｄにしても、前記本発明を実施するための第２の形態と同様な作用効果が得られるとともに、マグネットを用いたスラスト軸受に悪影響を与えるのを効率良く防止することができる。。
本発明を実施する形態ではアルマイト処理した軸部材４Ｃと、アルミ材で形成した軸受け本体７ａの軸受面にベース樹脂に摺動性改善補助材や補強材を混錬させた樹脂材で被膜成形した軸受け部材本体１８を形成した軸受け部材７Ｄであっても良い。
また、この軸受け部材７Ｄにハブを一体形成しても良い。
さらに、青銅系焼結金属の代わりに黄銅系金属を用いることもできる。 The fifth embodiment for carrying out the present invention shown in FIGS. 15 to 17 is mainly different from the second embodiment for carrying out the present invention in that nonmagnetic SUS303 and 304 are used.
The polygon scanner motor 1D having the gas dynamic pressure bearing formed in this way is used in that the shaft member 4C using the bearing and the bearing member 7D using the bearing body 7a formed of bronze sintered metal are used. In addition to the same effects as the second embodiment for carrying out the present invention, it is possible to efficiently prevent adverse effects on the thrust bearing using the magnet. .
In the embodiment of the present invention, the shaft member 4C that has been anodized and the bearing surface of the bearing body 7a formed of an aluminum material are coated with a resin material obtained by kneading a base resin with a slidability improving auxiliary material or a reinforcing material. The bearing member 7D in which the bearing member main body 18 is formed may be used.
Further, a hub may be integrally formed with the bearing member 7D.
Furthermore, a brass metal can be used instead of the bronze sintered metal.

なお、前記本発明を実施するための各形態ではポリゴンスキャナモータに気体動圧軸受けを設けたものについて説明したが、ポリゴンスキャナモータ以外の気体動圧軸受けを備えるカラーホイール用モータ、ファンモータ等のモータにも同様に使用することができる。   In each of the embodiments for carrying out the present invention, the polygon scanner motor provided with the gas dynamic pressure bearing has been described. However, the color wheel motor, the fan motor, etc. provided with the gas dynamic pressure bearing other than the polygon scanner motor. It can be used for motors as well.

本発明は気体動圧軸受けおよび気体動圧軸受けを備えるカラーホイール用モータ、ファンモータ、ポリゴンスキャナモータ等のモータを製造する産業で利用される。   INDUSTRIAL APPLICABILITY The present invention is used in an industry for manufacturing motors such as a gas dynamic pressure bearing and a motor for a color wheel including a gas dynamic pressure bearing, a fan motor, and a polygon scanner motor.

本発明を実施するための最良の第１の形態の平面図。The top view of the best 1st form for implementing this invention. 図１の２−２線に沿う断面図。Sectional drawing which follows the 2-2 line of FIG. 本発明を実施するための最良の第１の形態の軸部材の説明図。Explanatory drawing of the shaft member of the best 1st form for implementing this invention. 本発明を実施するための最良の第１の形態の軸部材の製造工程の説明図。Explanatory drawing of the manufacturing process of the shaft member of the best 1st form for implementing this invention. 本発明を実施するための第２の形態の平面図。The top view of the 2nd form for carrying out the present invention. 図５の６−６線に沿う断面図。Sectional drawing which follows the 6-6 line of FIG. 本発明を実施するための第２の形態の軸受け部材の説明図。Explanatory drawing of the bearing member of the 2nd form for implementing this invention. 本発明を実施するための第２の形態の軸受け部材の製造工程の説明図。Explanatory drawing of the manufacturing process of the bearing member of the 2nd form for implementing this invention. 本発明を実施するための第３の形態の平面図。The top view of the 3rd form for carrying out the present invention. 図９の１０−１０線に沿う断面図。Sectional drawing which follows the 10-10 line of FIG. 本発明を実施するための第３の形態の軸部材の製造工程の説明図。Explanatory drawing of the manufacturing process of the shaft member of the 3rd form for carrying out the present invention. 本発明を実施するための第４の形態の平面図。The top view of the 4th form for carrying out the present invention. 図１２の１３−１３線に沿う断面図。Sectional drawing which follows the 13-13 line | wire of FIG. 本発明を実施するための第４の形態の軸受け部材の製造工程の説明図。Explanatory drawing of the manufacturing process of the bearing member of the 4th form for implementing this invention. 本発明を実施するための第５の形態の平面図。The top view of the 5th form for implementing this invention. 図１５の１６−１６線に沿う断面図。FIG. 16 is a cross-sectional view taken along line 16-16 in FIG. 15; 本発明を実施するための第５の形態の軸受け部材の説明図。Explanatory drawing of the bearing member of the 5th form for implementing this invention.

符号の説明Explanation of symbols

１、１Ａ、１Ｂ、１Ｃ、１Ｄ：気体動圧軸受けを備えるポリゴンスキャナモータ、
２：基板、 ３：軸固定部材、
４、４Ａ、４Ｂ、４Ｃ：軸部材、５：気体動圧空間、
６：支持片、
７、７Ａ、７Ｂ、７Ｃ、７Ｄ：軸受け部材、
８：バックヨーク、 ９：コイル、
１０、１０Ａ：円環状の部材、 １１：多面鏡、
１２：多面鏡押え、 １３：ロータケース、
１４：永久磁石、 １５：軸部材本体、
１６：摺動面、 １７：スキン層、
１８：軸受け部材本体、 １９：軸受面、
２０：スキン層、 ２１：ハブ。
1, 1A, 1B, 1C, 1D: polygon scanner motor with gas dynamic pressure bearing,
2: substrate, 3: shaft fixing member,
4, 4A, 4B, 4C: shaft member, 5: gas dynamic pressure space,
6: Support piece,
7, 7A, 7B, 7C, 7D: bearing member,
8: Back yoke, 9: Coil,
10, 10A: annular member, 11: polygon mirror,
12: Polyhedral mirror presser, 13: Rotor case,
14: permanent magnet, 15: shaft member body,
16: sliding surface, 17: skin layer,
18: Bearing member body, 19: Bearing surface,
20: Skin layer, 21: Hub.

Claims (5)

軸部材およびこの軸部材に気体動圧空間を介して嵌合する軸受け部材の相対的な回転により動圧を発生し、回転を支承する気体動圧軸受けにおいて、前記軸部材と軸受け部材のいずれか一方の全体あるいは少なくとも軸受面を摺動性改善補助材を混錬させた樹脂材で被膜成型し、の軸受面になる部分のスキン層を除去して摺動性改善補助材を表面に露出させたことを特徴とする気体動圧軸受け。 In a gas dynamic pressure bearing that generates dynamic pressure by relative rotation of a shaft member and a bearing member fitted to the shaft member via a gas dynamic pressure space, and supports the rotation, either of the shaft member and the bearing member One or at least the bearing surface is coated with a resin material kneaded with a slidability improving auxiliary material, and the skin layer of the portion that becomes the bearing surface is removed to expose the slidability improving auxiliary material to the surface. Gas dynamic pressure bearing characterized by that. 気体動圧軸受けを備えるポリゴンスキャナモータ等のモータにおいて、該ポリゴンスキャナモータ等のモータの気体動圧軸受けの軸部材あるいは軸受けのいずれか一方の全体あるいは少なくとも軸受面を、摺動性改善補助材を混錬させた樹脂材で被膜成型し、の軸受面になる部分のスキン層を除去して摺動性改善補助材を表面に露出させたものを用いたことを特徴とするポリゴンスキャナモータ等のモータ。 In a motor, such as a polygon scanner motor, provided with a gas dynamic pressure bearing, the sliding member for improving the slidability is provided on the whole or at least the bearing surface of either the shaft member or the bearing of the gas dynamic pressure bearing of the motor such as the polygon scanner motor. Polygon scanner motors, etc., characterized in that a film is molded with a kneaded resin material, and the skin layer on the bearing surface is removed and the sliding improvement aid is exposed on the surface. motor. 気体動圧軸受けを備えるポリゴンスキャナモータ等のモータにおいて、該ポリゴンスキャナモータ等のモータの気体動圧軸受けの軸部材あるいは軸受け部材のいずれか一方の全体あるいは少なくとも軸受面を、摺動性改善補助材を混錬させた樹脂材で被膜成型し、の軸受面となる部分のスキン層を除去して摺動性改善補助材を表面に露出させるとともに、該気体動圧軸受けの回転体をなす側の多面鏡を搭載する部分には、該多面鏡と同系の材質を用いた円環状の部材を配置したことを特徴とするポリゴンスキャナモータ等のモータ。 In a motor such as a polygon scanner motor provided with a gas dynamic pressure bearing, the whole or at least the bearing surface of either the shaft member of the gas dynamic pressure bearing or the bearing member of the motor such as the polygon scanner motor is provided as an auxiliary material for improving slidability. The resin layer is kneaded with a resin material, and the skin layer on the bearing surface is removed to expose the slidability improving auxiliary material on the surface, and the gas dynamic pressure bearing rotating side is formed. A motor, such as a polygon scanner motor, characterized in that an annular member using a material similar to the polygonal mirror is disposed in a portion where the polygonal mirror is mounted. 軸部材あるいは軸受け部材の全体あるいは少なくとも軸受面はポリアミド、ポリアセタール、ポリカーボネート、変性ポリフェニレンエーテル、ポリブチレンテレフタレート、ポリエチレンテレフタレート、超高分子ポリエチレン、ポリサルホン、ポリエーテルサルホン、ポリフェニレンサルファイド、ポリアリレート、ポリアミドイミド、ポリエーテルイミド、ポリエーテルエーテルケトン、ポリイミド、液晶ポリマー、フッ素樹脂、エポキシ等のいずれかのベース樹脂に摺動性改善補助材としてカーボンファイバー、チタン酸カリウム繊維等の補強材と、グラファイト、二硫化モリブデン、二硫化タングステン、フッ素、PＴＦＥ、窒化ホウ素、フッ化黒鉛等の潤滑材と、錫、銀、銅、ニッケル等の金属あるいはこれらの合金等の熱伝導性能向上のための低融点金属とを混錬させて被膜成型したものであることを特徴とする請求項１、２、３いずれかに記載の気体動圧軸受けおよびポリゴンスキャナモータ等のモータ。 The whole or at least the bearing surface of the shaft member or bearing member is polyamide, polyacetal, polycarbonate, modified polyphenylene ether, polybutylene terephthalate, polyethylene terephthalate, ultrahigh molecular polyethylene, polysulfone, polyethersulfone, polyphenylene sulfide, polyarylate, polyamideimide, Base resin such as polyetherimide, polyetheretherketone, polyimide, liquid crystal polymer, fluororesin, epoxy, etc., reinforcing material such as carbon fiber and potassium titanate fiber as auxiliary material for improving slidability, graphite, disulfide Lubricants such as molybdenum, tungsten disulfide, fluorine, PTFE, boron nitride, and graphite fluoride, and thermal conductivity of metals such as tin, silver, copper, and nickel, or alloys thereof 4. A motor such as a gas dynamic pressure bearing and a polygon scanner motor according to claim 1, wherein the film is formed by kneading a low melting point metal for improving performance. 円環状の部材と気体動圧軸受けの回転体をなす側とは接着剤による固定あるいは一体成型したことを特徴とする請求項３記載のポリゴンスキャナモータ等のモータ。
4. A motor, such as a polygon scanner motor, according to claim 3, wherein the annular member and the side forming the rotating body of the gas dynamic pressure bearing are fixed or integrally molded with an adhesive.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009052195A (en) * 2007-08-23 2009-03-12 Aisin Seiki Co Ltd Vehicular roller device
JP2010127295A (en) * 2008-11-25 2010-06-10 Nsk Ltd Manufacturing method for telescopic shaft, and telescopic shaft manufactured by this manufacturing method
US8729769B2 (en) 2011-06-10 2014-05-20 Seiko Epson Corporation Electromechanical device, robot, movable body, and method of manufacturing electromechanical device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06173944A (en) * 1992-12-03 1994-06-21 Ebara Corp Gas dynamic pressure bearing
JPH0893750A (en) * 1994-09-29 1996-04-09 Konica Corp Light deflecting device having dynamic pressure bearing
JP2001140898A (en) * 1999-11-10 2001-05-22 Koyo Seiko Co Ltd Cage made of synthetic resin for rolling bearing
JP2004052850A (en) * 2002-07-18 2004-02-19 Sankyo Seiki Mfg Co Ltd Bearing device and its manufacturing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06173944A (en) * 1992-12-03 1994-06-21 Ebara Corp Gas dynamic pressure bearing
JPH0893750A (en) * 1994-09-29 1996-04-09 Konica Corp Light deflecting device having dynamic pressure bearing
JP2001140898A (en) * 1999-11-10 2001-05-22 Koyo Seiko Co Ltd Cage made of synthetic resin for rolling bearing
JP2004052850A (en) * 2002-07-18 2004-02-19 Sankyo Seiki Mfg Co Ltd Bearing device and its manufacturing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009052195A (en) * 2007-08-23 2009-03-12 Aisin Seiki Co Ltd Vehicular roller device
JP2010127295A (en) * 2008-11-25 2010-06-10 Nsk Ltd Manufacturing method for telescopic shaft, and telescopic shaft manufactured by this manufacturing method
US8729769B2 (en) 2011-06-10 2014-05-20 Seiko Epson Corporation Electromechanical device, robot, movable body, and method of manufacturing electromechanical device

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